Spike HV 69-70 Deletion mutant (ΔH69/ΔV70) SARS-CoV-2(2019nCoV) Pseudotyped virus production and Pseudovirus Based Neutralization Assay

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SARS-CoV-2 spike-HV 69-70 Deletion mutation(ΔH69/ΔV70)

The world is in midst of the COVID-19 pandemic caused by SARS-CoV-2 (2019nCoV) infection. The Spike protein (S-protein) of SARS-CoV-2 (2019nCoV) mediates receptor (ACE2) binding and cell entry and is the dominant target of the immune system. Most mutations and deletions of SARS-CoV-2 occur in the coronavirus spike protein.

A deletion H69/V70 in Spike was present in over 3,000 sequences worldwide (2.5% of the available data), and largely in Europe from where most of the sequences in GISAID are derived.

The structural impact of the double deletion was predicted by homology modelling of the spike NTD possessing H69/V70 using SWISS-MODEL. The H69/V70 deletion was predicted to alter the conformation of a protruding loop comprising residues 69-76, with the loop being predicted to be predicted to be pulled in the NTD.

Recently a novel SARS-COV-2 (2019nCOV) lineage, the B.1.1.7 lineage, with serials of site mutation, shows stronger infection ability in the UK. In SARS-COV-2 B.1.1.7 lineage, most mutations and deletions occur in the coronavirus spike protein. These deletions also include SARS-CoV-2 spike-HV 69-70 Deletion mutation(ΔH69/ΔV70).

GeneMedi pseudotype virus (pseudovirus) of SARS-COV-2 (2019nCOV) spike-HV 69-70 Deletion mutation(ΔH69/ΔV70)

GeneMedi codon-optimized spike mammalian expression vector for SARS-COV-2 (2019nCOV) spike-HV 69-70 Deletion mutation(ΔH69/ΔV70)

Description

The outbreak of COVID-19, caused by SARS-CoV-2 (2019-nCoV), has been a global public health threat and caught the worldwide concern. GeneMedi has developed SARS-CoV-2 wildtype and mutation variants pseudovirus production system, from which the SARS-CoV-2 wildtype and mutation variants pseudotyped virus can be handled in biosafety level 2 (BSL-2).

GeneMedi develop COVID-19 related SARS-CoV-2 (2019-nCoV)Pseudotyped virus of SARS-CoV-2 Spike Mutation Variants including D614G,S943P,V367F, G476S, V483A, H49Y, Q239K, A831V, P1263L,D839Y/N/E:D839Y,D839N,D839E,P2-mutated Spike protein trimer variant (P2-mutant, S1/S2 cleavage site(furin cleavage sequence)-mutant, trimerization modified), Spike(S1+S2) - B.1.1.7 lineage, Spike(S1+S2)-N501Y mutation, Spike(S1+S2)-HV 69-70 Deletion mutation(ΔH69/ΔV70) and so on.

SARS-CoV-2 Pseudotyped virus with Spike D614G mutation:Increasing frequency and global distribution.
SARS-CoV-2 Pseudotyped virus with Spike S943P mutation:It is found only in Belgium
SARS-CoV-2 Pseudotyped virus with Spike V367F mutation:
SARS-CoV-2 Pseudotyped virus with Spike G476S mutation
SARS-CoV-2 Pseudotyped virus with Spike V483A mutation
SARS-CoV-2 Pseudotyped virus with Spike H49Y mutation
SARS-CoV-2 Pseudotyped virus with Spike Q239K mutation
SARS-CoV-2 Pseudotyped virus with Spike A831V mutation
SARS-CoV-2 Pseudotyped virus with Spike P1263L mutation
SARS-CoV-2 Pseudotyped virus with Spike D839Y/N/E-D839Y mutation
SARS-CoV-2 Pseudotyped virus with Spike D839Y/N/E-D839N mutation
SARS-CoV-2 Pseudotyped virus with Spike D839Y/N/E-D839E mutation
SARS-CoV-2 Pseudotyped virus with P2-mutated Spike protein trimer variant (P2-mutant, S1/S2 cleavage site (furin cleavage sequence)-mutant,trimerization modified) mutation
SARS-CoV-2 Pseudotyped virus with Spike of SARS-COV-2 B.1.1.7 lineage mutation
SARS-CoV-2 Pseudotyped virus with Spike(S1+S2) N501Y mutation mutation
SARS-CoV-2 Pseudotyped virus with Spike(S1+S2)-HV 69-70 Deletion mutation(ΔH69/ΔV70) mutation

GeneMedi’s Pseudovirus Based Neutralization Assay (PBNA) is a conventional assay method that is suitable for High-Throughout Screening (HTS) without live virus engaged. The Pseudovirus Based Neutralization Assay can be used for evaluating:

1) Neutralizing antibodies
2) Peptides blockers (peptide inhibitors)
3) Types of Vaccines3
4) Compounds targeting Spike induced cell-fusion.

GeneMedi offers:

1.SARS-CoV-2 Pseudotyped virus packaging and production
2.Effector cells: human ACE2 overexpression stable HEK293T cell lines
3.SARS-CoV-2(2019nCoV) Pseudotyped Virus Based Neutralization Assay service.